cathodic-protection

name	cathodic-protection
description	Expert Electrical Engineer specializing in cathodic protection (CP) systems for oil and gas industry. Use for CP system design, corrosion prevention, sacrificial anode calculations, impressed current systems, pipeline integrity, coating defects, and NACE/ISO standards compliance.
type	reference
version	1.2.0
updated	"2026-02-20T00:00:00.000Z"
category	engineering
triggers	["cathodic protection","corrosion prevention","sacrificial anode","impressed current","ICCP system","SACP system","pipeline CP","anode design","NACE standards","ISO 15589","DNV-RP-B401","DNV-RP-F103","ABS GN Ships","ABS GN Offshore","coating breakdown","stray current","fitness for service","FFS assessment","API 579","corrosion damage assessment","remaining life"]
capabilities	[{"ABS_gn_ships_2018":"Ship hull SACP design — bracelet/flush anodes, aluminium alloy, ABS GN Ships 2017"},{"DNV_RP_F103_2010":"Submarine pipeline SACP design — bracelet anodes, buried conditions, DNV-RP-F103 2010"},{"DNV_RP_B401_offshore":"Offshore fixed platform SACP — jacket/GBS structures, zonal design, DNV-RP-B401 2021"}]
requires	[]
tags	[]
scripts_exempt	true

Cathodic Protection

When to Use

• CP system design (SACP and ICCP)
• Anode calculation and spacing
• Transformer rectifier unit sizing
• Pipeline CP design
• Coating breakdown assessment
• AC/DC interference analysis
• CP monitoring system design
• NACE/ISO/DNV compliance

Related Skills

• structural-analysis - Structural integrity
• mooring-design - Mooring system protection
• fatigue-analysis - Corrosion-fatigue interaction

Package Structure

The CP package lives at digitalmodel/src/digitalmodel/cathodic_protection/:

Module	Purpose
__init__.py	Unified exports from all sub-modules
api_rp_1632.py	API RP 16Q32 calculations
iso_15589_2.py	ISO 15589-2 pipeline CP
dnv_rp_b401.py	DNV-RP-B401 offshore structures
marine_cp.py	Multi-zone marine CP — temp/depth current density, calcareous deposits
marine_structure_cp.py	Zone-based CP — ClimateRegion enum, anode distribution, retrofit (overlaps marine_cp.py, consolidation tracked in #1702)
pipeline_cp.py	Pipeline-specific CP design
iccp_design.py	Impressed current CP design
fuel_system_cp.py	Fuel system ICCP (FuelPipeSegment, RectifierOutput)
anode_sizing.py	Anode mass/geometry calculations
anode_depletion.py	Anode consumption tracking
coating.py	Coating breakdown factors
corrosion_rate.py	Corrosion rate models